What do I receive when I hatch one of Mr. Talbot's bird eggs?

Once you hatch the egg, you still have an equal amount of time to nurture the chick. Then you will be able to release it, and it will fly around your island, although a single bird is hard to spot. Once you have multiple birds of the same type you will see them flock together flying. The continual hatching and releasing of birds will be a constant source of flowers for the advancement of your game.

Flowers! Depending on which bird you choose, after several days the egg gets closer to hatching, the hatchling goes through 2 cycles, the 1st one is the baby hatches and you get over 200 flowers, then after several more days it becomes full grown and again you get over 200 flowers! Then the new bird flies around the different islands and you start a new hatchling. Its definitely worth it!